Automatic door-closer.



U. TAOKE, JR.

AUTOMATIC DOOR CLOSER.

APPLICATION FILED APR. 11, 1912.

1,032,569, Patented July 16, 1912.

CARL 'IACKE, JR, OF HOLZMINDEN, GERMANY.

AUTOMATIC DOOR-CLOSER.

Specification of Letters Patent.

Patented July 16, 1912.

Application filed April 11, 1912. Serial No. 690,114.

To all whom it may concern."

Be it known that I, CARL TACKE, Jr., subject of the German Emperor,residing at 35 Furstenbergerstrasse, Holzminden, Germany, have inventedcertain new and useful Improvements in Automatic Door-Closers, of whichthe following is a specification.

This invention relates to an automatic door closer of that kind, inwhich two track members or brackets, one being secured to the door postand the other to the door, cooperate with each other in a sliding orrolling manner on suitably formed tracks so as to lift the door whenbeing opened.

The improvement according to the inven tion consists in the peculiararresting device for automatically keeping the door in its openposition. This device is shown in the accompanying drawing.

Figure 1 is a front elevation, Fig. 2 is a side elevation and Fig. 3 isa diagrammatic plan of one track member.

In the drawing, a and (Z are track members secured to the base plates aand 6, which latter are provided with openings 2', into which the endsof the opposite track members may protrude. The base plate a carryingthe track member 0 may be secured at a suitable place to the door postand as a counterpart, the other base plate 6 carrying the track member dis secured to the door. The said track members are provided withinclined tracksc" (Z which are adapted to slide one on the other, aroller 7 being provided when rolling action is desired. When opening thedoor, it is lifted owing to the engagement of the inclined tracks. Thefree ends of the curved track members 0 and d (Fig. 2) have notches 0and d, which are adapted to cooperate with ridges 2' arranged adjacentto the openings 17 of the said base plates. Owing to this engagement,the door is obviously held in the open position against the tendency tofall back into the closed position, the returning movement being howeverstarted by a slight jerk exerted on the door and releasing theengagement of the notches and ridges. The closing movement is obviouslycontrolled by the cooperation of the track members forming inclinedguideways so that the closing position coincides with the lowestposition of the door, the latter being assumed to be provided with theordinary door hinges but of course in such a manner that the door hingesadmit of a rising and falling movement along the fulcrum line of thehinges.

The advantage of the herein described door closer is that it may beadapted to any ordinary door or gate construction provided with hingesof the type above referred to and that when it is combined therewith, itfulfils the object of the special helically mounted hinges, which areknown for this purpose, While at the same time affording the moreconvenient arresting means.

.I claim:

A door closer comprising a pair of track members each supported by abase plate, secured to door post and door respectively, and cooperatingwith each other in an inclined path, the said members being provided attheir free ends with notches adapted for the mutual engagement ofridges, which are disposed at the inner ends of the tracks adjacent tothe base plate, substantially as described. and shown in the drawing.

In testimony whereof I affix my signature in presence of two witnesses.

CARL TACKE, JR.

Witnesses:

HENRY HAsrER, WOLDEMAR HAUPT.

Copies of this patent may be obtained for five cents each, by addressingthe "Commissioner of Patents, Washington, I). C.

